Baguio City has been struck by quite strong earthquakes within 24 hours, from the afternoon of Thursday, February 17, 2011 and early morning of February 18, 2011. A search I did on the USGS does not show any information on the two successive tremors on the afternoon of 02/17/2011. What only shows is the one of 02/18/2011 and here are the details:
Date-Time Thursday, February 17, 2011 at 22:20:53 UTC
Friday, February 18, 2011 at 06:20:53 AM at
Location 16.520°N, 120.410°E
Depth 52.8 km (32.8 miles)
Region LUZON, PHILIPPINES
Distances 25 km (15 miles) WNW of Baguio, Luzon, Phil.
55 km (35 miles) N of Dagupan, Luzon, Phil.
130 km (80 miles) NNW of Cabanatuan, Luzon,
220 km (135 miles) NNW of MANILA, Phil.
Mild intensity Earthquakes that occur in Baguio reminds those who experienced the devastating 7.4 tremor of July 16, 1990, the fear it has struck in their minds.